A typo in US ride-hailing service Lyft’s latest earnings report gave the Uber rival’s shares an extraordinary rollercoaster ride. When presenting its quarterly figures, Lyft announced that the adjusted profit margin would improve by 500 basis points, or 5%, in the current year, in what would have been a spectacular improvement in profitability – last year, the adjusted margin was just 1.6%. Chief financial officer Erin Brewer later clarified in a conference call with analysts about half an hour later that the figure in the press release contained one zero too many and that the margin was forec…